Water heater



c. u. LEVIS WATER HEATER July 2, 1929.

Filed May 2'7, 1926 5 Sheets-Sheet ATTORNEY.

INVENTOR. Charles HZevz's, 4

C. U. LEVIS WATER HEATER Jul 2, 1929.

Filed May 27, 1926 3 Sheets-Sheet 3 0m ML m a 9 m I a 1 w Patented July2, 1929.

purse STATES CHARLES u. LEVIS, or PHILADELPHIA, PENNSYLVANIA.

WATER HEATER.

Application. filed May 27, 1526.

This invention relates to water heaters es pee ly a 'lapted for domesticuse.

'lhe objects are to provide a water heater which may be regiilaied tobeat any desired ipiantity oi water with a minimum cou siiin iiion oi?'l'uel amlmaintain the water at a by desired temperature; which willheat the water without causing agitation oi the rust sedimentseiitljii'ig at the bottom of the tank and which is simple and durablein construction.

'lhese objects, and other :nlvantageous ends which will be describedhereinafter, I attain in the jl ollowing manner reference being had tothe accouipanyiug drawings in which liicure 1 is a central. sectionthrough a heater construcred inaccordance with my invention.

Iliigure 2 a section on line 2-2 oi? Figure l, certain oi the partsbeii'ig shown in full,

Figure 3 an enlarged section on line 3 of Figure 2,

l igure :l a. fragmentary sectimi on line oi? Figure 3,

l "igure 3 a side view of" a head which forms a. part oi my invention,

Figure (3 a plan view ot a modified form oi head,

lliguro 7 a section on. line 77 of Fig ure 6..

Figure 8 another 'l or'ni of head, and

l igurc 9 a, section on line 9 9 of Figure it.

ltelierring to the drawings, 1. indicates a drum oi? a water tank, 2 atop head secured. to and closing the upper ernl oi the drum and 3 a.bottom head secured to and closing the lower end of the drum. A waterheating chamber at, integral. with the bottom. head and extending intothe drum, has an inclined top 5 to which an inlet pipe 6 and an outletpipe 7 are connected. Tin-Violet pipe is short and connected to thelowermost part oi the top and the outlet pipe is long and is connectedto the uppermost part oi the top.

The bottom oi the chamber is made from a n m-ilierroi.is plate 8, suchas copper, which bears against the shoulder of a. shouldered edge 9 andis secured to the edge by brazing it with hard solder 10. The lower endof the drum may be mounted on a. suitable support 11 which may also anya. burner 1.2 for heating the nonderrous plate. The hotgases coming fromthe burner pass upward through a tube 13 se- Serial No. 111,914.

cured. to the top and bottom heads and disposed within the drum. i later may be admi tted to the tank by a supply pipe 14. and may bedischarged from the tank by a discharge pipe 15. The lower end of thesupply pi pc preferably terminates near the upper end of the short inletpipe Gadjaceut the lower end 01 the drum. Thedischarge pipe 15 stopsshort at the top head, and. the outlet pipe 7 oil? the heating chamberextends upwardly to a point adjacent the top head. i

In Figures l-5 the beatingchamber is shown. as of substantially conipalcross scction so that a small volume of water will be contained therein.

In l igures 0 and 7 the heatii'ig chamber is oil? circular plan sectionand in Figures 8 and 9 the heating chamber is of rectangular plan,section. In. all. other respects these chambers are similar to thechamber shown in the other figures of the drawing. I have thereforegiven correspmuling parts similar reference cliarizicters with theexponent a inl igures 6 and 7 and the exponent b in Figures 8 and 9.

In use the burner. may be ignited in the usual. manner and the fuelsupplied to the burner' from any suitable source. The flames ot' theburner playing against the copper plate will. cause the heat to bequickly transferred to the wati-n. in the chamber. The water uponv beingheated will rise to the uppermost part or" the chamber adjacent theoutlet pipe 7. Upon further heating, the nter will gradually risethrough outlet pipe 7 to the top of the tank. the hot water rises, cold.water passes down inlet pipe 6 into the chamber to. be heated. A

circuit for the water thus established through the chamber, up pipe 7,down the drum, through. pipe 6 and into the chamber again as indicatedby the arrows. The dimensions of the chamber are preferably such thatthe volume oi? water therein will be quickly heated and will pass upwardthrough the outlet pipe 7 at such rate that the current established willprevent foreign matter, which may precipitate due to the heating, fromsettling on the copper plate. The chamber is thus kept free of sediment;and constantly supplies heated sediment -:l'ree water to the top of thetank. Any sediment which may precipitate will settle outside the chamberat the bottom of the tank. The hot gases from the burner may pass upwardthrough tube 13. The heat absorbed from the hot gases will pass throughthe tube to heat the water. By regulating the flame of the burner anydesired quantity of watermay be heated and passed to the top of the tankand kept at any desired temperature.

I have found that by using a non-ferrous plate at the bottom of theheating chamber I of the appended claims.

Having thus described my invention, what Iclaim as new and desire tosecure by Letters Patent is 1. A water heater including a tank, a headclosing the bottom of the tank, a portion of said head comprising achamber pr0ject ing inwardly from the bottom portion of the tank andopen at its lower end, a separable wall closing the open end of saidchamber, and conduits communicating with the inte rior of said chamber,the chamber being considerably smaller in crosssection than the tank. e

2. In a water heater, a water tank, a bottom head for said tankcomprising a unit casting fitting within the lower end of the tank andhaving a preheating chamber therein open at its bottom and an outwardlyextending flange formed at its sides, a nonferrous plate covering thebottom of the chamber, an outlet to the tank at the highest point in thechamber, and an inlet to the/chamber at a lower elevation than theoutlet, said inlet and outlet having conduit connections for preventingthe depositing of sediment on the plate.

3. A heating chamber forming the bottom head of a boiler, comprising anannular flange adapted to fit within the outer casing of the boiler,walls extending from the flange upwardly in the boiler casing to formthe chamber, a material of greater thermal conductivity than that of theboiler easing covering the opening to form a bottom to said chamber,said chamber bottom being capable of sustaining a volume of watermeasured by its cross-sectional area and the height of the boiler andthe annular flange being capable of supporting the remainder of thewater in the boiler casing.

4. In a water heater having a casing, a heater including an open-endedchamber in the lower end of the casing, a skirt formed adjacent thelower edges of the chamber, and having its outer edge turned downwardlyto form an annular flange for securing the heater to the casing,shoulders formed at the junction of the skirt and the lower edges of thechamber, a non-ferrous plate secured to the shoulders and closing theopen end of the chamber, and conduits communicating with the interior ofthe chamher.

5. In a. water heater having a casing, a heater including an open-endedchamber in the lower end of the casing, a skirt formed adjacent thelower edges of the chamber and having its outer edge turned dowm ardlyto form an annular flange for securing the heater to the casing,shoulders formed on the lower edges of the chamber. a plate of greaterthermal conductivity than said casing secured to the shoulders andclosing the open end of the chamber, and conduits communicating with theinterior of the chamber; the greatest cross-sectional area of thechamber being substantially less than the v.

cross-sectional area of the casing whereby a substantial space isprovided between the outside of the chamber walls and the casing. Intestimony whereof I have signed my name to this specification.

CHARLES U. LEVIS.

